| idol_id | 1862 |
| Selca owner | granciel_yumeka |
| Pop type | J-Pop |
| Stage name (romanized) | Kobayashi Yumeka |
| Stage name (original) | 小林 夢叶 |
| Real name (romanized) | Kobayashi Yumeka |
| Real name (original) | 小林 夢叶 |
| Birth date | 2002-10-03 (age 22) ▲ ▼ |
| Chinese zodiac sign | 🐎 Horse |
| Western zodiac sign | ♎ Libra |
| Hometown | Gifu |
| Height | 154.0cm (5'1") ▲ ▼ |
| Weight | |
| Blood type | |
| Debut date | |
| Country of origin | 
Japan |
| Name | Company | Fandom | Debut date | Disbandment date | Current member | |
|---|---|---|---|---|---|---|
| Gran☆Ciel | ArcJewe | 2018-12-04 | Yes |